Sentences with phrase «small planetary objects»
Using the known decay rates of various radioactive isotopes, he investigates the chronology of early processes on small planetary objects and studies the chemical and physical aspects of old and young crust - forming processes on Earth.
https://carnegiescience.edu/
The Earth formed from an accumulation of gas, dust, and small planetary objects.
Not exact matches
The asteroid will be one of the smallest objects ever visited by a planetary spacecraft.
«They're very close, and this is a very small object,» says Mark Showalter, a planetary astronomer at the SETI Institute in Mountain View, Calif., who led the campaign.
«It is quite possible that not only brown dwarfs are still hiding in the observational data, but also other objects with even smaller, planetary - like masses.
«Small objects decay very quickly and enter the atmosphere,» says planetary scientist Ralph Lorenz of Johns Hopkins University.
«The results confirm one of the basic ideas of planetary formation theory, that most of the Earth formed by collisions of smaller objects like carbonaceous chondrites,» says Scott Kenyon at the Harvard - Smithsonian Center for Astrophysics in Cambridge, Massachusetts.
I apply numerical models to investigate the physical and chemical evolution of planetary materials, ranging from the small dust grains suspended in protoplanetary disks to the many kilometer - scale objects which accrete together to form planets.
Using telescopes, astronomers have discovered new planets and moons in our solar system, revealed that our planetary neighbourhood is just a small part of a vast galaxy, that our galaxy is just one of many billions across the universe, and that most objects in the universe are flying away from us at high speed because of its overall expansion.
The name «planetary nebula» refers only to the round shape that many of these objects show when examined through a small telescope.
This definition is based in modern theories of planetary formation, in which planetary embryos initially clear their orbital neighborhood of other smaller objects.
These comets are observed to come into the Solar System from all directions, which implies an immense spherical cloud of trillions of small icy, planetary objects — all potentially active but currently dormant comets — that extend as much as two light - years outward from Sol.